Guard for yarn guides of winding machines



July 17, 1934. c HAVEY 1,966,500

GUARD FOR YARN GUIDES OF WINDING MACHINES Filed March 12, 1932wlmmlmimiiliillIiil 1N VENTOR: Juries 74 M114 I A TTORNEYS.

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Patented July 17, 1934 GUARD FOR YARN GUIDES OF WINDING MACHINES 7Charles F. Havey, Philadelphia, Pa. Application March 12, 1932, SerialNo. 598,494 6 Claims. (01442-157) This invention relates to guards forthe guides.

of winding machines such as are ordinarily employed' to wind yarns intopackages suitable for use in knitting or weaving processes.

"-In a winding machine of the kind to which I have particular reference,the yarn is drawn from a supply spool and passed, first through a tensioning means, and then through the notched eye of a guide finger whileenroute to a receiving tube, which latter is 'mounted on a spindlerotating at very high speed, the guide finger being constantly traversedback and forth along the length of the receiving tube in order todistribute the yarn uniformly in successive layers. Through slackoccasioned by momentary variations in'tensionon the yarn or due to otherabnormally induced causes incident to the operation of thewindingmachine, loose turns or convolutions are sometimes formed on the packagebeing wound. 7 Under the high rotative speed of the package, theselooseturns or convolutions are thrown outward bycentrifugal' action, andinvariably catch on the traversing guide fing'er. This results inrupture of the loop, and, as the winding of the package continues, thebroken ends are covered byfollo'wing'layers of the'yarn and thus escapedetection by the operator of the winding machine as well as by theinspector afterwards. When such yarn'is subsequently used in a warpingmachine or in a loom, the separations occasioned by the ruptures entailstoppages to enable connecting of the broken ends, with attendant lossof 'timeand corresponding reduction in theoutput of the warping machineor loom. Again, when suchyam is used. in a knitting machine, theseparations of the yarns where the ruptures have occurred causes what isknown as press-ofis which are very costly to theknitter, and, as in thecase of the warping machines and looms, greatly curtails production.'W-hen 'press oils occur'under' these conditions,"the-knitter usuallycomplains that the broken ends had not been properlytied or lappedaround the cone'packa'ge during winding Broadly speaking, my inventionis directed-toward obviating the-above contingencies, which desideratumI attain; through provision of a deflecting guard designed forattachmentto the thread guide fingers of winding machines, and adaptedto restrain any loose turns or convolutions on the packages, and preventtheir entan-' glement with said guide fingers.

A further aim of my invention is to provide a guard, which, in additionto functioning as aforesaid, will facilitate threading of the guide andprevent accidental displacement of the thread from the notched eye ofthe guide.

Still other objects and attendant advantages of this invention will bemanifest from the detailed description following in connection with theattached drawing,wherein Fig. I is a frag mentary elevation of a typicalyarn winding machine whereof the traversing guide fingeris fitted withmy improved guardh 1 Fig. II is a fragmentary view 'in plan showing thetraversing guide and the guard in operative relation to the packagebeing wound.

Fig. III is a detail cross sectional view taken as indicated by thearrows III-IIIin Fig. Fig. IV is a perspective view of the guard drawntoalarger scale; and g Fig. V is a detail sectional viewtakenasindicated by the arrows V-V in Fig.,III and likewise drawn to a largerscale. I a

With more specific reference to these illustrations, the numeral 6designates one of the horizontal spindles of thawinding machine, whichspindle is driven at'high speed ,by suitable means, not, illustrated.Mounted on the free end of the spindle 6 is a holder -'7 forthe conicaltube 8 onto which the yarn Sis-being woundinto'a package ofcorresponding shape, the said holder .being disconnectable from thespindle through 'a clutch means actuatableby a handle 10. Enroute to thecone 8, the yarn 9 is first passedthrough a tensioning means (notillustrated), then led over a wire ball 11 which is carried bytheswinging counterweighted traverse frame of themachine partly shown at12, and finally through the V- notch of the porcelain eye 13 of thetraversing guide finger 14. As usual, the guidefinger I4 is detachablysecured, by means of a clamp screw 15, to the end of a rod 16 extendinglaterally from a block 17 which is slidinglyguidedby a horizontal bar 18of, the swinging framelZ, Reciprocatory motion is imparted to theslide.block 17 through a roller 19 engaging the peripheral groove of a rotarycam partly shown at 20, the traversing guide finger l4. being therebymoved. back and forth lengthwise of'the cone 8, and so determinesuniformdistribution' of the yarn 9 in successive layers, while' theporcelain eye 13 .is constantly maintained in; sliding contact with thesurface'of the yarnpackag e by the action of the counterweight (notshown) on the frame 12, all in a well known manner.

Incident to the operation of a winding machine of the described type,loose turns or convolutions, for example as indicated at 21 in Figs. IIand III, are sometimes formed on the yarn package due to fluctuations inthe tension on the yarn, or to other causes. By influence of centrifugalforce attending rapid rotation of the yarn package, such turns orconvolutions 21 are bowed outwardly and invariably catch on thetraversing guide finger 14 with resultant rupture of the yarn. If theoperative of the winding machine fails to notice the occurrence, thebroken ends of the yarn are covered by layers subsequently wound on thepackage and are therefore not detectable upon final inspection of thefinished cone.

The guard which I have devised to overcome these difiiculties, isgenerally indicated in the drawing by the numeral 22. As shown in Fig.IV, the guard 22 is in the form of a'convexed sheet metal stamping witha spherically-convexcd upper portion characterized by open annular wings23 which are symmetrically disposed to opposite sides of a pendanttongue 24 whereof the bottom edge is laterally bent as at 25. The wings23, it will be particularly noted, are relatively wide, and extend wellabove the spindle 6 and the package 8 being wound thereon. It willfurther be noted that the wings 23 are separated by an interval 26 whichincreases gradually from a mere slit at the top, to a roundedenlargement 27 at the bottom proportioned to fit over the head 13a ofthe porcelain eye 13 of the traversing guide finger 14, see Fig. V. Asshown in Figs. I and III, the guard 22 is secured to the traversingguide finger 14 at the front, with its tongue 24 aligned with the shankof the guide, with the enlarged bottom portion 27 of its slit 26engaging over the head 13a of the porcelain eye 13, and with itsoutwardly curving deflecting wings 23 arranged tangentially in relationto the length of the cone 8 and disposed to opposite sides of the guidefinger. The screw 28, which is employed as the securing means, passesthrough an aperture 29 (Fig. IV) in the tongue 24 of the guard 22 andscrews into the guide finger 14. Virtually, the tongue 24 of the guard22 constitutes a spring clamp with a fulcrum at the point of contact ofits laterally turned edge 25 with the shank of the guide finger 14,whereby the circumferential flange 30 of the porcelain eye 13 (Fig. V)is clamped to said guide finger. The porcelain eye 13 is thus definitelypositioned on, and effectively secured to the guide finger 14 withoutnecessitating use of glue or shellac as ordinarily.

In the event of the formation of a loose turn or convolution 21 on thecone 8, the wings 23 of the guard, by virtue of their outward curvatureand disposal tangentially of the length of the cone, will obviouslydeflect the bowed loop of loose yarn away from the guide incident to thetraverse of the latter, and thereby prevent its entanglement andrupture.

The guard of my invention is accordingly advantageous in that itpositively obviates yarn rupture in the event of the formation of looseturns or convolutions on the yarn packages incident to winding and inthat it absolutely precludes the more serious after effects to whichattention has been directed hereinbefore. My improved guard moreoverfacilitates threading of the guide since its slit 26 serves as a meansfor directing the yarn into the notch of the eye 13, as well as a meansto prevent accidental displacement of the yarn from said eye afterthreading.

Having thus described my invention, I claim:

1. As a new article of manufacture, an integrally formed guard for usein connection with the thread guides of winding machines, said guardbeing characterized by a spherically-convexed upper portion withopen-annular deflecting wings symmetrically disposed laterally of acentral pendant attaching tongue, and a narrow threading slit betweenthe wings.

2. 'As a new article of manufacture, an integrally formed guard for usein connection with the thread guides of winding machines, said guardbeing characterized by a spherically-convexed upper portion with openannular deflectink wings symmetrically disposed laterally of a centralpendant attaching tongue, and a narrow threading slit with a circularterminal enlargement between the wings.

3. As a new article of manufacture, an integrally formed stamped sheetmetal guard for use in connection with winding machines, said guardbeing characterized by a spherically-convexed upper portion with annulardeflecting wings symmetrically disposed laterally of a central dependingattaching tongue, and a narrow threading slit between the wings.

4. As a new article of manufacture, an integrally formed stamped sheetmetal guard for use in connection with winding machines, said guardbeing characterized by a spherically-converted upper portion with openannular wings symmetrically disposed laterally of a pendant centralattaching tongue, a narrow threading slit with a circular terminalenlargement between the wings,

and a pivoting projection along the bottom edge of said tongue.

5. A guard for the traversing guide fingers of winding machines, havinga pendant tongue apertured for attachment to the front of the shank ofthe guide finger; and a spherically-convexed upper portion in tangentialrelation to the spindle of the winding machine, characterized by a pairof annular guard wings symmetrically disposed at opposite sides of acentral vertical threading slit, said slit terminating at its bottom ina rounded opening for protrusion of the head of a notched cylindricthread eye with a circumferential flange of the latter engaged betweenthe guard and the guide finger.

6. A guard for the traversing guide fingers of winding machines having atongue apertured for attachment by a screw to the front of the shank ofthe guide finger, said tongue being formed with a fulcrum edge at itslower end to bear on said guidefinger; and a spherically-convexed upperportion in tangential relation to the spindle of the winding machine,characterized by apair of annular guard wings symmetrically disposed atopposite sides of a central vertical threading slit,isaid slitterminating at its bottom in a rounded opening for protrusion of thehead of a notched cylindric thread eye with a circumferential notch onthe latter clampingly held between the guard and the guide finger.

CHARLES F. HAVEY.

